/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Collision/ParticlePairMidPhase.h
Set up the midphase based on the SHapesArrays of the two particles Only intended to be called once right after constructor. We don't do this work in the constructor so that we can reduce the time that the lock is held when allocating new MidPhases.
void Init ( [FGeometryParticleHandle](API\Runtime\Chaos\Chaos\FGeometryParticleHandle) * InParticle0, [FGeometryParticleHandle](API\Runtime\Chaos\Chaos\FGeometryParticleHandle) * InParticle1, const [FCollisionParticlePairKey](API\Runtime\Chaos\Chaos\Collision\FCollisionParticlePairKey) & InKey, const [FCollisionContext](API\Runtime\Chaos\Chaos\Collision\FCollisionContext) & Context )